Mary, our broody coop is a converted dog house (arch door cut in the back for people access) with its own completely enclosed 6-foot run attached. She is in full view of the flock when she comes out to eat and drink but also has food and water close to the nest inside, as I have been worried she has not come out much and it is very warm here. I do not know if there was an "event" of any kind, as we have been away for the fourth, but I have a call in to our animal caretaker to check, and the rest of the flock including four from our last hatch are present and accounted for. She may just be a nervous first-time mother, but these eggs were pushed all the way as far as the end of her run, which is where the broken one was--looked like she stepped on it. I am hoping she just was trying to sort out one that might not have been viable, but I'll have to wait and see how she does with the remaining ones . I will try to get a count tonight--maybe she'll be a little more mellow after dark! Thanks for the replies.